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Finding the Fourth Proportional to 139,794.48, 209,887.74 and 133,495.92

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Solution

The fourth proportional to 139,794.48, 209,887.74 and 133,495.92 is: 200,431.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,794.48 : 209,887.74 = 133,495.92 : x
  2. Step 2: Convert to fraction form
    139,794.48/209,887.74 = 133,495.92/x
  3. Step 3: Cross multiply
    139,794.48x = 209,887.74 × 133,495.92
  4. Step 4: Simplify right side
    139,794.48x = 28,019,156,948.02
  5. Step 5: Solve for x
    x = 28,019,156,948.02/139,794.48
  6. Step 6: Final answer
    x = 200,431.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.